1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
/*
* Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <linux/gpio.h>
#define QI_LB60_SND_GPIO JZ_GPIO_PORTB(29)
#define QI_LB60_AMP_GPIO JZ_GPIO_PORTD(4)
static int qi_lb60_spk_event(struct snd_soc_dapm_widget *widget,
struct snd_kcontrol *ctrl, int event)
{
int on = !SND_SOC_DAPM_EVENT_OFF(event);
gpio_set_value(QI_LB60_SND_GPIO, on);
gpio_set_value(QI_LB60_AMP_GPIO, on);
return 0;
}
static const struct snd_soc_dapm_widget qi_lb60_widgets[] = {
SND_SOC_DAPM_SPK("Speaker", qi_lb60_spk_event),
SND_SOC_DAPM_MIC("Mic", NULL),
};
static const struct snd_soc_dapm_route qi_lb60_routes[] = {
{"Mic", NULL, "MIC"},
{"Speaker", NULL, "LOUT"},
{"Speaker", NULL, "ROUT"},
};
#define QI_LB60_DAIFMT (SND_SOC_DAIFMT_I2S | \
SND_SOC_DAIFMT_NB_NF | \
SND_SOC_DAIFMT_CBM_CFM)
static int qi_lb60_codec_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_codec *codec = rtd->codec;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dapm_context *dapm = &codec->dapm;
int ret;
snd_soc_dapm_nc_pin(dapm, "LIN");
snd_soc_dapm_nc_pin(dapm, "RIN");
ret = snd_soc_dai_set_fmt(cpu_dai, QI_LB60_DAIFMT);
if (ret < 0) {
dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
return ret;
}
return 0;
}
static struct snd_soc_dai_link qi_lb60_dai = {
.name = "jz4740",
.stream_name = "jz4740",
.cpu_dai_name = "jz4740-i2s",
.platform_name = "jz4740-i2s",
.codec_dai_name = "jz4740-hifi",
.codec_name = "jz4740-codec",
.init = qi_lb60_codec_init,
};
static struct snd_soc_card qi_lb60 = {
.name = "QI LB60",
.owner = THIS_MODULE,
.dai_link = &qi_lb60_dai,
.num_links = 1,
.dapm_widgets = qi_lb60_widgets,
.num_dapm_widgets = ARRAY_SIZE(qi_lb60_widgets),
.dapm_routes = qi_lb60_routes,
.num_dapm_routes = ARRAY_SIZE(qi_lb60_routes),
};
static const struct gpio qi_lb60_gpios[] = {
{ QI_LB60_SND_GPIO, GPIOF_OUT_INIT_LOW, "SND" },
{ QI_LB60_AMP_GPIO, GPIOF_OUT_INIT_LOW, "AMP" },
};
static int qi_lb60_probe(struct platform_device *pdev)
{
struct snd_soc_card *card = &qi_lb60;
int ret;
ret = gpio_request_array(qi_lb60_gpios, ARRAY_SIZE(qi_lb60_gpios));
if (ret)
return ret;
card->dev = &pdev->dev;
ret = snd_soc_register_card(card);
if (ret) {
dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
ret);
gpio_free_array(qi_lb60_gpios, ARRAY_SIZE(qi_lb60_gpios));
}
return ret;
}
static int qi_lb60_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
snd_soc_unregister_card(card);
gpio_free_array(qi_lb60_gpios, ARRAY_SIZE(qi_lb60_gpios));
return 0;
}
static struct platform_driver qi_lb60_driver = {
.driver = {
.name = "qi-lb60-audio",
.owner = THIS_MODULE,
},
.probe = qi_lb60_probe,
.remove = qi_lb60_remove,
};
module_platform_driver(qi_lb60_driver);
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_DESCRIPTION("ALSA SoC QI LB60 Audio support");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:qi-lb60-audio");
|
